Interference Indication Method and Apparatus

ABSTRACT

An interference indication method and apparatus detect interference from a neighboring cell. A base station sends interference indication information to the neighboring cell including indication information of a frequency resource that receives the interference from the neighboring cell and is configured in a flexible half-duplex mode. In this way, in an application of a flexible half-duplex technology, a base station detects a status of interference from a neighboring cell.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.15/764,711, filed on Mar. 29, 2018, which is the national phase of theInternational Application No. PCT/CN2015/091495, filed on Oct. 8, 2015,both of which are incorporated herein by reference in their entireties.

TECHNICAL FIELD

The present disclosure relates to the field of wireless communications,and in particular, to an interference indication method and apparatus.

BACKGROUND

In a time division duplex (TDD) system, a same spectrum is allocated toan uplink and a downlink, and the uplink and the downlink occupydifferent time periods. Currently, in an Long Term Evolution (LTE)system, neighboring cells use a same TDD configuration mode (that is, anuplink-downlink timeslot configuration) as much as possible, to avoidinter-cell interference from an uplink (UL) to a downlink (DL) andinter-cell interference from a DL to a UL.

To improve frequency utilization, a TDD system may allocate differentuplinks and downlinks in different timeslots, so as to make full use ofwireless resources and adapt to asymmetry of different services. Such atechnology of adaptively implementing an uplink-downlink timeslotconfiguration according to a service need of a network device is usuallyreferred to as a flexible haft-duplex technology.

However, when neighboring cells use different timeslot configurations,cross-timeslot interference is generated, that is, when a cell uses onetimeslot to transmit uplink information and a neighboring cell uses thesame timeslot to transmit downlink information, there is interferencebetween the two cells, which is presented as interference from one basestation to another or interference from one piece of user equipment toanother. Such interference reduces a system capacity, or even leads to acall drop and blocking.

To make full use of advantages of the TDD system, dynamically adjustuplink-downlink resource allocation, and improve spectrum efficiency, aproper technical solution needs to be used to overcome impact ofcross-timeslot interference. To reduce or avoid the cross-timeslotinterference, a base station performing interference suppression needsto learn of an interference status of a neighboring cell. Therefore, inan application scenario of the flexible half-duplex technology, how toindicate interference is a problem that urgently needs to be resolvedcurrently.

SUMMARY

Embodiments of the present disclosure provide an interference indicationmethod and apparatus.

According to a first aspect, an interference indication method isprovided, including detecting, by a base station, interference from aneighboring cell; and sending, by the base station, interferenceindication information to the neighboring cell, where the interferenceindication information includes at least indication information of afrequency resource that receives the interference from the neighboringcell, and the frequency resource is a frequency resource configured tobe in a flexible half-duplex mode.

With reference to the first aspect, in a first possible implementationof the first aspect, the interference indication information furtherincludes one piece of or a combination of the following information:indication information of a subframe that receives the interference fromthe neighboring cell and that is on the frequency resource; indicationinformation of a physical resource block (PRB) that receives theinterference from the neighboring cell and that is on the frequencyresource; or interference level indication information of theinterference from the neighboring cell.

With reference to the first possible implementation of the first aspect,in a second possible implementation of the first aspect, the subframethat receives the interference from the neighboring cell and that is onthe frequency resource is a subframe that receives reverse transmissioninterference from the neighboring cell and that is on the frequencyresource; or the PRB that receives the interference from the neighboringcell and that is on the frequency resource is a PRB that receivesreverse transmission interference from the neighboring cell and that ison the frequency resource.

With reference to any one of the first aspect or the first to the secondpossible implementations of the first aspect, in a third possibleimplementation of the first aspect, the interference indicationinformation is carried in first signaling for transmission.

With reference to any one of the first aspect or the first to the secondpossible implementations of the first aspect, in a fourth possibleimplementation of the first aspect, the interference indicationinformation is carried in first signaling and second signaling fortransmission, where the first signaling includes the interference levelindication information of the interference from the neighboring cell,and the second signaling includes the indication information of thefrequency resource that receives the interference from the neighboringcell.

With reference to the fourth possible implementation of the firstaspect, in a fifth possible implementation of the first aspect, thefirst signaling further includes the indication information of thesubframe and/or the PRB that receive/receives the interference from theneighboring cell; or the second signaling further includes theindication information of the subframe and/or the PRB thatreceive/receives the interference from the neighboring cell.

With reference to the first aspect, in a sixth possible implementationof the first aspect, the interference indication information is carriedin second signaling and overload indication (OI) signaling fortransmission, where the second signaling includes the indicationinformation of the frequency resource that receives the interferencefrom the neighboring cell, and the OI signaling includes interferencelevel indication information of the interference from the neighboringcell to the frequency resource indicated by the first interferenceindication signaling.

With reference to the sixth possible implementation of the first aspect,in a seventh possible implementation of the first aspect, the OIsignaling further includes indication information of a subframe and/or aPRB that receive/receives the interference from the neighboring cell; orthe second signaling further includes indication information of asubframe and/or a PRB that receive/receives the interference from theneighboring cell.

With reference to the first aspect, in an eighth possible implementationof the first aspect, the interference indication information is carriedin second signaling and high interference indication (HII) signaling fortransmission, where the second signaling includes the indicationinformation of the frequency resource that receives the interferencefrom the neighboring cell, and the HII signaling includes indicationinformation of a PRB that probably causes interference to theneighboring cell and that is on the frequency resource indicated by thesecond signaling.

With reference to the eighth possible implementation of the firstaspect, in a ninth possible implementation of the first aspect, the HIIsignaling further includes indication information of a subframe thatreceives the interference from the neighboring cell, and/or interferencelevel indication information; or the second signaling further includesindication information of a subframe and/or a PRB that receive/receivesthe interference from the neighboring cell.

With reference to any one of the first aspect or the first to the ninthpossible implementations of the first aspect, in a tenth possibleimplementation of the first aspect, the method further includesreceiving, by the base station, indication information of a timeresource and/or a frequency resource that are/is configured to be in theflexible half-duplex mode, where the indication information is sent bythe neighboring cell; and/or sending, by the base station, indicationinformation of a time resource and/or a frequency resource that are/isconfigured to be in the flexible half-duplex mode.

With reference to the tenth possible implementation of the first aspect,in an eleventh possible implementation of the first aspect, theindication information of the time resource and/or the frequencyresource that are/is configured to be, in the flexible half-duplex modeis sent by means of semi-persistent broadcasting.

According to a second aspect, a base station is provided, including aninterference detection module configured to detect interference from aneighboring cell; and an interference indication module configured tosend interference indication information to the neighboring cell, wherethe interference indication information includes at least indicationinformation of a frequency resource that receives the interference fromthe neighboring cell, and the frequency resource is a frequency resourceconfigured to be in a flexible half-duplex mode.

With reference to the second aspect, in a first possible implementationof the second aspect, the interference indication information furtherincludes one piece of or a combination of the following information:indication information of a subframe that receives the interference fromthe neighboring cell and that is on the frequency resource; indicationinformation of a FRB that receives the interference from the neighboringcell and that is on the frequency resource; or interference levelindication information of the interference from the neighboring cell.

With reference to the first possible implementation of the secondaspect, in a second possible implementation of the second aspect, thesubframe that receives the interference from the neighboring cell andthat is on the frequency resource is a subframe that receives reversetransmission interference from the neighboring cell and that is on thefrequency resource; or the PRB that receives the interference from theneighboring cell and that is on the frequency resource is a PRB thatreceives reverse transmission interference from the neighboring cell andthat is on the frequency resource.

With reference to any one of the second aspect or the first to thesecond possible implementations of the second aspect, in a thirdpossible implementation of the second aspect, the interferenceindication information is carried in first signaling for transmission.

With reference to any one of the second aspect or the first to thesecond possible implementations of the second aspect, in a fourthpossible implementation of the second aspect, the interferenceindication information is carried in first signaling and secondsignaling for transmission, where the first signaling includes theinterference level indication information of the interference from theneighboring cell, and the second signaling includes the indicationinformation of the frequency resource that receives the interferencefrom the neighboring cell.

With reference to the fourth possible implementation of the secondaspect, in a fifth possible implementation of the second aspect, thefirst signaling further includes the indication information of thesubframe and/or the PRB that receive/receives the interference from theneighboring cell; or the second signaling further includes theindication information of the subframe and/or the PRB thatreceive/receives the interference from the neighboring cell.

With reference to the second aspect, in a sixth possible implementationof the second aspect, the interference indication information is carriedin second signaling and OI signaling for transmission, where the secondsignaling includes the indication information of the frequency resourcethat receives the interference from the neighboring cell, and the OIsignaling includes interference level indication information of theinterference from the neighboring cell to the frequency resourceindicated by the first interference indication signaling.

With reference to the sixth possible implementation of the secondaspect, in a seventh possible implementation of the second aspect, theOI signaling further includes indication information of a subframeand/or a PRB that receive/receives the interference from the neighboringcell; or the second signaling further includes indication information ofa subframe and/or a PRB that receive/receives the interference from theneighboring cell.

With reference to the second aspect, in an eighth possibleimplementation of the second aspect, the interference indicationinformation is carried in second signaling and HII signaling fortransmission, where the second signaling includes the indicationinformation of the frequency resource that receives the interferencefrom the neighboring cell, and the HII signaling includes indicationinformation of a PRB that probably causes interference to theneighboring cell and that is on the frequency resource indicated by thesecond signaling.

With reference to the eighth possible implementation of the secondaspect, in a ninth possible implementation of the second aspect, the HIIsignaling further includes indications information of a subframe thatreceives the interference from the neighboring cell, and/or interferencelevel indication information; or the second signaling further includesindication information of a subframe and/or a PRB that receive/receivesthe interference from the neighboring cell.

With reference to any one of the second aspect or the first to the ninthpossible implementations of the second aspect, in a tenth possibleimplementation of the second aspect, the following is further includedreceiving, by the base station, indication information of a timeresource and/or a frequency resource that are/is configured to be in theflexible half-duplex mode, where the indication information is sent bythe neighboring cell; and/or sending, by the base station, indicationinformation of a time resource and/or a frequency resource that are/isconfigured to be in the flexible half-duplex mode.

With reference to the tenth possible implementation of the secondaspect, in an eleventh possible implementation of the second aspect, theindication information of the time resource and/or the frequencyresource that are/is configured to be in the flexible half-duplex modeis sent by means of semi-persistent broadcasting.

According to a third aspect, a base station is provided. The basestation includes a processing unit and a memory. The processing unit isconfigured to control an operation of the base station; and the memoryis configured to provide an instruction and data for the processingunit.

An interference indication procedure implemented by the base stationdisclosed in an embodiment of the present disclosure may be applied tothe processing unit or be implemented by the processing unit. Duringimplementation, steps in the interference indication procedureimplemented by the base station may be implemented using an integratedlogic circuit of hardware in the processing unit, or using aninstruction in a form of software. The steps of the methods disclosedwith reference to this embodiment of the present disclosure may bedirectly implemented by a hardware processor, or may be implemented by acombination of hardware and a software module in a processor. Thesoftware module may be in a random access memory, a flash memory, aread-only memory, a programmable read-only memory or an electricallyerasable programmable memory, a register, or another mature storagemedium in the art. The storage medium is located in the memory. Theprocessing unit reads information in the memory, and completes, withreference to hardware of the processing unit, the steps of theinterference indication procedure implemented by the base station.

Specifically, the processing unit may be configured to execute theforegoing interference indication procedure described in thisembodiment. The procedure may include detecting interference from aneighboring cell; and sending interference indication information to theneighboring cell, where the interference indication information includesat least indication information of a frequency resource that receivesthe interference from the neighboring cell, and the frequency resourceis a frequency resource configured to be in a flexible half-duplex mode.

For a specific implementation process, reference may be made to an oneof the first aspect or the possible implementations of the first aspect,and details are not described herein again.

In the foregoing embodiments of the present disclosure, after detectingthe interference from the neighboring cell, the base station sends theinterference indication information to the neighboring cell, where theinterference indication information includes at least the indicationinformation of the frequency resource that receives the interferencefrom the neighboring cell and that is configured to be in the flexiblehalf-duplex mode, so as to indicate that the interference from theneighboring cell is interference on the frequency resource configured tobe in the flexible half-duplex mode. In this way, in an applicationscenario of a flexible half-duplex technology, a base station can learnof a status of interference from a neighboring cell, so as to use acorresponding interference suppression mechanism.

BRIEF DESCRIPTION OF DRAWINGS

To describe the technical solutions in embodiments of the presentdisclosure more clearly, the following briefly describes theaccompanying drawings required for describing the embodiments.Apparently, the accompanying drawings in the following description showmerely some embodiments of the present disclosure, and persons ofordinary skill in the art may still derive other drawings from theseaccompanying drawings without creative efforts.

FIG. 1 is a schematic diagram of an interference indication procedureaccording to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a base station according toan embodiment of the present disclosure; and

FIG. 3 is a schematic structural diagram of a base station according toanother embodiment of the present disclosure.

DESCRIPTION OF EMBODIMENTS

To make the objectives, technical solutions, and advantages of thepresent disclosure clearer, the following further describes the presentdisclosure in detail with reference to the accompanying drawings.Apparently, the described embodiments are merely some rather than all ofthe embodiments of the present disclosure. All other embodimentsobtained by persons of ordinary skill in the art based on theembodiments of the present disclosure without creative efforts shallfall within the protection scope of the present disclosure.

In the embodiments of the present disclosure, a base station may be anevolved. NodeB (eNB or e-NodeB), a macro base station, a micro basestation (also referred to as a “small cell”), a picocell base station,an access point (AP), a transmission point (TP), or the like in an LTEsystem or a Licensed-Assisted Access LTE (LAA-LTE) system. This is notlimited by the present disclosure.

In the embodiments of the present disclosure, user equipment (UE) may bereferred to as a terminal, a mobile station (MS), a mobile terminal, orthe like. The user equipment may communicate with one or more corenetworks through a radio access network (RAN). For example, the userequipment may be a mobile phone (also referred to as a “cellular” phone)or a computer with a mobile terminal. For example, the user equipmentmay be a portable mobile apparatus, a pocket-sized mobile apparatus, ahandheld mobile apparatus, a computer built-in mobile apparatus, or anin-vehicle mobile apparatus, and they exchange voice and/or data withthe radio access network.

For ease of description, the base station and the user equipment areused as examples for description in the following embodiments.

It should be understood that, in the embodiments of the presentdisclosure, some time resources and/or frequency resources may beconfigured as flexible half-duplex time resources and/or frequencyresources. For example, some frequency bands (band) or frequencysubbands (subband), some subframes, or some PRBs may be configured asflexible half-duplex resources. For example, operators can use threefrequency bands with frequency ranges from 1880 to 1900 megahertz (MHz),from 2320 to 2370 MHz, and from 2575 to 2635 MHz. If channel bandwidthis 20 MHz, 1880 to 1900 MHz, 2320 to 2340 MHz, and 2350 to 2370 MHz arefrequency subbands.

Referring to FIG. 1, FIG. 1 is a schematic diagram of an interferenceindication procedure according to an embodiment of the presentdisclosure. The procedure may be executed by a base station.

As shown in the figure, the procedure may include the following steps.

Step 101: The base station detects interference from a neighboring cell.

In this step, the base station may detect the interference from theneighboring cell according to a signal sent by or a measurement reportreported by a terminal in a coverage area of the base station. Forexample, from a perspective of an uplink, the base station may detect,according to an uplink signal sent by the terminal, interferencereceived by each PRB; from a perspective of a downlink, the base stationmay detect interference according to reference signal received quality(RSRQ) or a signal to interference plus noise ratio (SINR) reported bythe terminal.

Step 102: The base station sends interference indication information tothe neighboring cell, where the interference indication informationincludes at least indication information of a frequency resource thatreceives the interference from the neighboring cell, the frequencyresource is a frequency resource configured to be in a flexiblehalf-duplex mode, and the frequency resource includes one or acombination of a frequency band, a frequency subband, a partialfrequency hand, or a partial frequency subband.

In step 102, the base station may send, using an inter-base station link(such as an X2 interface the foregoing interference indicationinformation to a base station serving the neighboring cell.

By performing step 102, the base station may indicate, using theinterference indication information, which frequency band, frequencysubband, partial frequency band, or partial frequency subband, on thefrequency resource that is of the base station and that is configured tobe in the flexible half-duplex mode, receives the interference from theneighboring cell. The indication information of the frequency resourceincluded in the interference indication information may befrequency-range information of the frequency band, the frequencysubband, the partial frequency band, or the partial frequency subband.Preferably, to reduce signaling overheads, the indication information ofthe frequency resource may alternatively be represented by an identityof the frequency band, the frequency subband, the partial frequencyband, or the partial frequency subband. Each frequency hand, frequencysubband, partial frequency band, or partial frequency subband isidentified using a unique identifier (ID).

Preferably, the interference indication information not only includesthe indication information of the frequency resource configured to be inthe flexible half-duplex mode, but also may include one piece of or acombination of the following information: indication information of asubframe that receives the interference from the neighboring cell andthat is on the frequency resource configured to be in the flexiblehalf-duplex mode, where the indication information of the subframe maybe specifically a subframe index; indication information of a PRB thatreceives the interference from the neighboring cell and that is on thefrequency resource configured to be in the flexible half-duplex mode,where the indication information of the PRB may be specifically a PRBindex, such as a PRB number; or interference level indicationinformation of the interference from the neighboring cell, where aninterference level may be specifically defined according to an existingprotocol, or may be redefined.

Further, if the base station is capable of learning of anuplink-downlink timeslot configuration of the neighboring cell, the basestation may detect in step 101 whether the interference from theneighboring cell is reverse transmission interference. If theinterference is the reverse transmission interference, there are twocases: In step 102, if the interference indication information includesthe indication information of the subframe that receives theinterference from the neighboring cell and that is on the frequencyresource, the subframe is a subframe that receives the reversetransmission interference from the neighboring cell and that is on thefrequency resource configured to be in the flexible half-duplex mode; orif the interference indication information includes the indicationinformation of the PRB that receives the interference from theneighboring cell and that is on the frequency resource, the PRB is a PRBthat receives the reverse transmission interference from the neighboringcell and that is on the frequency resource configured to be in theflexible half-duplex mode.

For example, a cell A detects interference from a cell B. Reversetransmission interference from the cell B to the cell A is interferencefrom a downlink of the cell B to the cell A in an uplink transmissiontime period of the cell A or interference from an uplink of the cell Bto the cell A in a downlink transmission time period of the cell A. Thecell A is capable of learning of an uplink-downlink timeslotconfiguration of the cell B. Therefore, when the cell A receives theinterference from the cell B in the uplink transmission time period ofthe cell A, if the cell A determines, according to the uplink-downlinktimeslot configuration of the cell B, that the cell B performs downlinktransmission in this time period, the interference from the cell B inthis time period is considered to be reverse transmission interference.Similarly, when the cell A receives the interference from the cell B inthe downlink transmission time period of the cell A, if the cell Adetermines, according to the uplink-downlink timeslot configuration ofthe cell B, that the cell B performs uplink transmission in this timeperiod, the interference from the cell B in this time period isconsidered to be reverse transmission interference.

Preferably, for the foregoing cases, in some embodiments, theinterference indication information may carry additional indicationinformation, to indicate whether the detected interference from theneighboring cell is reverse transmission interference. For example, theinterference indication information may carry an indication identifier,to indicate whether the interference is reverse transmissioninterference from the neighboring cell. Alternatively, an indicationidentifier may be set for each frequency band, frequency subband,partial frequency band, partial frequency subband, subframe, or PRB, toindicate whether interference received by a corresponding frequencyband, frequency subchannel, partial frequency band, partial frequencysubband, subframe, or PRB is reverse transmission interference from theneighboring cell. Certainly, for the foregoing cases, the interferencethat is from the neighboring cell and that is indicated by theinterference indication information may be considered to be reversetransmission interference by default.

In the foregoing procedure, the interference indication information maybe carried in signaling for transmission. Several preferred solutions ofsending the foregoing interference indication information by means ofsignaling are provided in this embodiment of the present disclosure.Respective descriptions are given below.

Solution (1): Asymmetric link direction indicator (ALI) signaling isused alone.

In solution (1), a new type of signaling is used to carry the foregoinginterference indication information and is particularly applied to ascenario in which the interference indicated by the interferenceindication information is reverse transmission interference from theneighboring cell. Herein, the newly-used signaling is referred to asfirst signaling or ALI signaling. In the following descriptions, thesignaling is referred to as the ALI signaling.

The ALI signaling includes the indication information of the frequencyresource that receives the interference from the neighboring cell andthat is configured to be in the flexible half-duplex mode, and theindication information of the subframe and/or the PRB thatreceive/receives the interference from the neighboring cell and thatare/is on the frequency resource. Further, the ALI signaling may furtherinclude the interference level indication information. In this way, whenonly the ALI signaling is configured, the ALI signaling may be used toindicate which frequency band, frequency subband, partial frequencyband, or partial frequency subband on the frequency resource configuredto be in the flexible half-duplex mode receives the reverse transmissioninterference from the neighboring cell, and which subframe and/or PRB onthe frequency resource receive/receives the reverse transmissioninterference from the neighboring cell, and may further indicateseverity of the received interference.

During specific implementation, for each frequency resource configuredto be in the flexible half-duplex mode, such as a frequency band, afrequency subband, a partial frequency, band, or a partial frequencysubband, a subframe and/or a PRB that receive/receives the reversetransmission interference from the neighboring cell and that are/is onthe frequency resource and an interference status of the subframe and/orthe PRB may be separately indicated. In this case, ALI indicationinformation corresponding to different frequency resources configured tobe in the flexible half-duplex triode may be different. For example, ALIindication information corresponding to a frequency band or frequencysubband includes a reverse transmission indication identifier, or avalue of the identifier is used to represent reverse transmissioninterference, while ALI indication information corresponding to anotherfrequency band or frequency subband does not include the reversetransmission indication identifier, or a value of the identifier is usedto represent codirectional transmission interference.

For an ALI signaling format, reference may be made to an OI signalingformat. Table 1 shows an example of an ALI signaling format.

TABLE 1 ALI signaling format IE/group name Presence Range IE type andreference (Information (Mandatory (Value (Information element Semanticsdescription element/group name) or optional) range) type anddescription) (Description) Cross Link 1 . . . <maxnoofPRBs> interferenceOverload Indication List (cross link interference overload indicationlist) >subband index O (Optional) (frequency subband index) >subframeindex O (Optional) (subframe index) >UL Interference M Enumeration Alocation of each PRB Overload Indication (Mandatory) (high interference,in the list is used to (uplink interference moderate interference,identify the PRB. For overload indication) low interference, . . . )example, the first IE in the list is corresponding to a PRB 0, thesecond IE is corresponding to a PRB 1, and so on.

In Table 1, a value of maxnoofPRBs is a maximum value of a PRB number,such as 110.

Solution (2): resource indicator (R_ind) signaling is used together withALI signaling.

In solution (2), a new type of signaling is used together with the ALIsignaling, to carry the interference indication information. Herein, thenewly-used signaling is referred to as second signaling or the R_indsignaling. In the following descriptions, the signaling is referred toas the R_ind signaling.

The R_ind signaling includes the indication information of the frequencyresource that receives the interference from the neighboring cell andthat is configured to be in the flexible half-duplex mode. A frequencyresource indicated by an R_ind may be any frequency division duplex(FDD) UL frequency band. The ALI signaling may include the interferencelevel indication information of the interference from the neighboringcell.

Further, in some embodiments, the R_ind signaling may further includethe indication information of the subframe and/or the PRB thatreceive/receives the interference from the neighboring cell and thatare/is on the frequency resource. In some other embodiments, the ALIsignaling may further include indication information of a subframeand/or a PRB that receive/receives the interference from the neighboringcell and that are/is on the frequency resource indicated by the R_indsignaling.

Preferably, the R_ind signaling and the ALI signaling may beperiodically sent, and a sending period of the R_ind signaling may bedifferent from a sending period of the ALI signaling.

Solution (3): R_ind signaling is used together with OI signaling.

In an LIE system, an OI is obtained based on a measurement. A sourcecell (or a source base station) that sends the OI indicates aninterference status of each PRB of the cell using the OI, and theinterference is classified into three levels: high, moderate, and low.In a neighboring cell that receives the OI, interference poweradjustment and user scheduling adjustment may be performed on acorresponding PRB according to the received OI, so that the interferencefrom the source cell to the neighboring cell is alleviated.

In the solution in which the R_ind signaling is used together with theOI signaling, the R_ind signaling includes the indication information ofthe frequency resource that receives the interference from theneighboring cell and that is configured to be in the flexiblehalf-duplex mode, and the OI signaling includes the interference levelindication information of the interference from the neighboring cell.

Further, in some embodiments, the R_ind signaling may further includethe indication information of the subframe and/or the PRB thatreceive/receives the interference from the neighboring cell and thatare/is on the frequency resource. In some other embodiments, the OIsignaling may further include indication information of a subframeand/or a PRB that receive/receives the interference from the neighboringcell and that are/is on the frequency resource indicated by the R_indsignaling.

The OI may be interpreted correspondingly based on the R_ind. Forexample, in some embodiments, if an R_ind sent by a small cell indicatesa frequency band or a frequency subband and a specific subframe set ofthe small cell, an OI sent by the small cell means that on a resourceindicated by the R_ind, some PRBs of the small cell receiveinterference.

Preferably, the R_ind signaling and the OI signaling may be periodicallysent, and a sending period of the R_ind signaling may be different froma sending period of the OI signaling.

Solution (4): R_ind signaling is used together with HII signaling.

An HII indicates PRBs that will be allocated by the cell to an edge userin a period of time in future, so that a neighboring cell avoids usingthese PRBs as much as possible while performing scheduling for the edgeuser. The HII is scheduling information based on the edge user of thecell. In a source cell (or a source base station) that sends the HII,the HII is used to indicate a status of resource blocks that will beallocated by the cell to an edge terminal of the cell. These resourceblocks cause relatively high interference to a neighboring base station,and are rather sensitive to interference from the neighboring basestation. In a destination cell that receives the HII, resource blocksthat are of a neighboring cell and that will cause strong interferenceare determined by monitoring the HII of the neighboring cell. Schedulingavoidance or power adjustment is implemented for these resource blocks.

In the solution in which the R_ind signaling is used together with theHII signaling, the R_ind signaling includes the indication informationof the frequency resource that receives the interference from theneighboring cell and that is configured to be in the flexiblehalf-duplex mode, and the HII signaling includes indication informationof a PRB that probably causes interference to the neighboring cell andthat is on the frequency resource indicated by the R_ind signaling.

Further, in some embodiments, the R_ind signaling may further includethe indication information of the subframe and/or the PRB thatreceive/receives the interference from the neighboring cell and thatare/is on the frequency resource. In some other embodiments, the HIIsignaling may further include indication information of a subframe thatreceives the interference from the neighboring cell and that is on thefrequency resource indicated by the R_ind signaling, and/or interferencelevel indication information.

The HII is interpreted correspondingly based on an R_ind. For example,if an R_ind sent by a macro cell indicates a frequency band or afrequency subband and a downlink subframe of the macro cell, an HII sentby the macro cell means that downlink transmission of the macro cell maycause high interference to uplink transmission of a small cell.

Further, new signaling may be further used in this embodiment of thepresent disclosure, and the signaling is used to indicate a timeresource and/or a frequency resource that are/is configured to be in theflexible half-duplex mode. In this embodiment of the present disclosure,the signaling is referred to as a flexible duplex resource indication(FD_(res)_ind).

Specifically, the FD_(res)_ind signaling may include one piece of or acombination of the following information: indication information of afrequency resource configured to be in the flexible half-duplex mode,where the frequency resource may specifically include one or acombination of a frequency band, a frequency subband, a partialfrequency band, or a partial frequency subband, and the indicationinformation of the frequency resource may be identity information of thefrequency band, the frequency subband, the partial frequency band, orthe frequency subband; indication information of a subframe configuredto be in the flexible half-duplex mode, where the indication informationof the subframe may be specifically a subframe index; or indicationinformation of a PRB configured to be in the flexible half-duplex mode,where the indication information of the PRB may be specifically a PRBindex, such as a PRB number.

Further, when a source base station that sends the FD_(res)_indsignaling is capable of learning of an uplink-downlink timeslotconfiguration of a neighboring cell (or a neighboring base station), atransmission direction of the time resource and/or the frequencyresource that are/is configured to be in the flexible half-duplex modeand that are/is indicated by the FD_(res)_ind signaling is opposite to atransmission direction of a resource of the neighboring cell in a sametime period, that is, transmission, performed by the cell or basestation that sends the FD_(res)_ind signaling, on the time resourceand/or the frequency resource indicated by the FD_(res)_ind signalingmay cause reverse transmission interference to the neighboring cell.

Preferably, the FD_(res)_ind signaling may be sent by means ofsemi-persistent broadcasting. For example, the FD_(res)_ind signalingmay be operation and management (OAM) configuration signaling, or X2interface signaling, or may be over the air (OTA) interface signaling.

The FD_(res)_ind signaling may be configured to be sent by a macro-cellbase station, or may be configured to be sent by a small-cell basestation.

The FD_(res)_ind signaling may also be used together with the foregoingsignaling used for interference indication. The following describesseveral solutions in which the FD_(res)_ind signaling is used togetherwith another signaling.

Solution (5): FD_(res)_ind signaling is used together with OI signaling.

For example, the FD_(res)_ind signaling is configured to be sent by amacro-cell base station. A small-cell base station may learn, accordingto the FD_(res)_ind signaling sent by the macro-cell base station, of atime resource and/or a frequency resource that are/is configured to bein the flexible half-duplex mode. After receiving OI signaling sent bythe macro-cell base station, a small cell may perform interferencesuppression according to an uplink-downlink timeslot configuration of amacro cell. In addition, the small cell may send OI signaling to themacro-cell base station, to indicate that the small cell receivesinterference from the macro cell.

Solution (6): FD_(res)_ind signaling is used together with HIIsignaling.

For example, the FD_(res)_ind signaling is configured to be sent by amacro-cell base station. A small-cell base station may learn, accordingto the FD_(res)_ind signaling sent by the macro-cell base station, of atime resource and/or a frequency resource that are/is configured to bein the flexible half-duplex mode. After receiving signaling sent by themacro-cell base station, a small cell may perform interferencesuppression according to an uplink-downlink timeslot configuration of amacro cell. In addition, the small cell may send HII signaling to themacro-cell base station, to indicate that the small cell may causeinterfere to the macro cell.

Solution (7): FD_(res)_ind signaling is used together with ALIsignaling.

For example, the FD_(res)_ind signaling is configured to be sent by amacro-cell base station. A small-cell base station may learn, accordingto the FD_(res)_ind signaling sent by the macro-cell base station, of atime resource and/or a frequency resource that are/is configured to bein the flexible half-duplex mode. A small cell may send ALI signaling tothe macro-cell base station, to indicate that the small cell receivesinterference from a macro cell on the frequency resource indicated bythe FD_(res)_ind signaling. Further, interference indicated by the ALIsignaling is reverse transmission interference received by the smallcell from the macro cell.

Solution (8): FD_(res)_ind signaling is used together with ALI signalingand R_ind signaling.

For example, the FD_(res)_ind signaling is configured to be sent by amacro-cell base station. A small-cell base station may learn, accordingto the FD_(res)_ind signaling sent by the macro-cell base station, of atime resource and/or a frequency resource that are/is configured to bein the flexible half-duplex mode. A small cell may send. ALI signalingand R_ind signaling to the macro-cell base station. The R_ind signalingis used to indicate that the small cell receives interference from amacro cell on the frequency resource indicated by the FD_(res)_indsignaling, and the ALI signaling is used to indicate an interferencelevel of the interference received by small cell.

To sum up, in the foregoing embodiment of the present disclosure, afterdetecting the interference from the neighboring cell, the base stationsends the interference indication information to the neighboring cell,where the interference indication information includes at least theindication information of the frequency resource that receives theinterference from the neighboring cell and that is configured to be inthe flexible half-duplex mode, so as to indicate that the interferencefrom the neighboring cell is interference on the frequency resourceconfigured to be in the flexible half-duplex mode. In this way, in anapplication scenario of a flexible half-duplex technology, a basestation can learn of a status of interference from a neighboring cell,so as to use a corresponding interference suppression mechanism.

For better understanding of this embodiment of the present disclosure,the following describes an implementation process of the foregoingembodiment in detail using a specific scenario as an example.

Scenario 1

A macro cell is adjacent to a small cell. Both the macro cell and thesmall cell are operating on a frequency subband subband i, and thesubband i is a frequency subband configured to be in the flexiblehalf-duplex mode.

An uplink-downlink timeslot configuration of the macro cell on thesubband i is presented in Table 2 in a sequence from a subframe 0 to asubframe 9.

TABLE 2 Uplink-downlink timeslot configuration of the macro cell on thesubband i Subframe 0 Subframe 1 Subframe 2 Subframe 3 Subframe 4Subframe 5 Subframe 6 Subframe 7 Subframe 8 Subframe 9 D S U D D D S U DD

An uplink-downlink timeslot configuration of the small cell on thesubband i is presented in Table 3 in a sequence from a subframe 0 to asubframe 9.

TABLE 3 Uplink-downlink timeslot configuration of the small cell on thesubband i Subframe 0 Subframe 1 Subframe 2 Subframe 3 Subframe 4Subframe 5 Subframe 6 Subframe 7 Subframe 8 Subframe 9 D S U U D D S U UD

D represents a downlink subframe, U represents an uplink subframe, and Srepresents a special subframe.

01001 When the foregoing solution (1) is used, if on the subband i, asmall-cell base station detects that there is high interference in thesubframe 3 (an uplink subframe), the small-cell base station sends ALIsignaling to a macro-cell base station, to indicate PRBs that receiveinterference and that are on the subframe 3 of the subband i configuredto be in the flexible half-duplex mode. Further, if the small cell iscapable of learning of the uplink-downlink timeslot configuration of themacro cell, the small-cell base station can determine the interferenceon the subframe 3 is reverse transmission interference from the macrocell, so that PRBs that receive reverse transmission interference from aneighboring cell and that are on the subframe 3 of the subband iconfigured to be in the flexible half-duplex mode can be indicated usingthe ALI signaling.

When the foregoing solution (2) is used, if on the subband i, asmall-cell base station detects that there is high interference in thesubframe 3 (an uplink subframe), the small-cell base station sends ALIsignaling and R_ind signaling to a macro-cell base station. The R_indsignaling is used to indicate that the small cell receives interferencefrom a macro cell on the subband i configured to be in the flexiblehalf-duplex mode, and the AU signaling is used to indicate PRBs thatreceive interference and that are on the subframe 3 of the subband i.

When the foregoing solution (3) is used, if on the subband i, asmall-cell base station detects that there is high interference in thesubframe 3 (an uplink subframe), the small-cell base station sends OIsignaling and R_ind signaling to a macro-cell base station. The R_indsignaling is used to indicate that the small cell receives interferencefrom a macro cell on the subframe 3 of the subband i configured to be inthe flexible half-duplex mode, and the OI signaling is used to indicatean interference level of the interference received by the small cell.

Scenario 2

A macro cell is adjacent to a small cell. Both the macro cell and thesmall cell are operating on a frequency subband subband I, and thesubband I is a frequency subband configured to be in the flexiblehalf-duplex mode.

An uplink-downlink timeslot configuration of the macro cell on thesubband i is presented in Table 2 in a sequence from a subframe 0 to asubframe 9.

TABLE 2 Uplink-downlink timeslot configuration of the macro cell on thesubband I Subframe 0 Subframe 1 Subframe 2 Subframe 3 Subframe 4Subframe 5 Subframe 6 Subframe 7 Subframe 8 Subframe 9 D S U U D D S U UD

An uplink-downlink timeslot configuration of the small cell on thesubband I is presented in Table 3 in a sequence from a subframe 0 to asubframe 9.

TABLE 3 Uplink-downlink timeslot configuration of the small cell on thesubband I Subframe 0 Subframe 1 Subframe 2 Subframe 3 Subframe 4Subframe 5 Subframe 6 Subframe 7 Subframe 8 Subframe 9 D S U D D D S U DD

D represents a downlink subframe, U represents an uplink subframe, and Srepresents a special subframe.

When the foregoing solution (3) is used, if on the subband I, asmall-cell base station detects that there is high interference in thesubframe 2 (an uplink subframe) but not in the subframe 3 (a downlinksubframe), the small-cell base station sends R_ind signaling and OIsignaling to a macro-cell base station. The R_ind signaling is used toindicate that the small cell receives interference from the macro cellon the subframe 2 of the subband I configured to be in the flexiblehalf-duplex mode, and the OI signaling is used to indicate aninterference level.

After receiving the R_ind signaling and the OI signaling sent by thesmall cell, the macro-cell base station may perform power control and/orscheduling restriction for the subframe 2 of the subband I, but notperforms power control and/or scheduling restriction for all uplinkfrequency bands or frequency subbands, so as to improve resourceefficiency.

Scenario 3

A macro cell is adjacent to a small cell. Both the macro cell and thesmall cell are operating on a frequency subband subband I, and asubframe 3 of the subband I is configured to be in the flexiblehalf-duplex mode.

The macro cell notifies, by sending FD_(res)_ind signaling, aneighboring cell that the subframe 3 of the subband I is configured tobe in the flexible half-duplex mode.

The small cell learns, according to the FDres_ind signaling sent by themacro cell that the subframe 3 of the subband I is configured to be inthe flexible half-duplex mode. Therefore, when detecting interferencefrom the macro cell on the subframe 3 of the subband I, the small cellsends ALI signaling to the macro cell, to indicate to the macro cellthat some PRBs on the subframe 3 of the subband I receive theinterference from the macro cell. A macro-cell base station may furtherperform a measurement for the subframe 3 of the subband I according tothe ALI signaling, and perform interference suppression according to aresult of the measurement.

In some other scenarios, when the macro cell uses a type ofuplink-downlink timeslot configuration with relatively many uplinktransmissions, to save energy in a low-load state, the macro cell mayrestrict most uplink transmissions to one uplink frequency resource, andanother uplink frequency resource may be almost idle (that is, no userequipment is scheduled to send data on this uplink frequency resource).In this case, the macro-cell base station may notify, by sending R_indsignaling and HII signaling, the neighboring cell that the uplinkfrequency, resource and a subframe of the uplink frequency resourcereceive interference. In this way, scheduling flexibility can beimproved and neighboring-cell resource utilization can be improved moreeffectively.

Based on the same technical conception, an embodiment of the presentdisclosure further provides a base station.

Referring to FIG. 2, FIG. 2 is a schematic structural diagram of a basestation according to an embodiment of the present disclosure. The basestation may include an interference detection module 201 and aninterference indication module 202.

The interference detection module 201 is configured to detectinterference from a neighboring cell.

The interference indication module 202 is configured to sendinterference indication information to the neighboring cell, where theinterference indication information includes at least indicationinformation of a frequency resource that receives the interference fromthe neighboring cell, the frequency resource is a frequency resourceconfigured to be in a flexible half-duplex mode, and the frequencyresource includes one or a combination of a frequency band, a frequencysubband, a partial frequency band, or a partial frequency subband.

Preferably, the interference indication information further includes onepiece of or a combination of the following information: indicationinformation of a subframe that receives the interference from theneighboring cell and that is on the frequency resource; indicationinformation of a PRB that receives the interference from the neighboringcell and that is on the frequency resource; or interference levelindication information of the interference from the neighboring cell.

The subframe that receives the interference from the neighboring celland that is on the frequency resource is a subframe that receivesreverse transmission interference from the neighboring cell and that ison the frequency resource; or the PRB that receives the interferencefrom the neighboring cell and that is on the frequency resource is a PRBthat receives reverse transmission interference from the neighboringcell and that is on the frequency resource.

Preferably, in some embodiments, the interference indication informationis carried in first signaling for transmission.

Preferably, in some other embodiments, the interference indicationinformation is carried in first signaling and second signaling fortransmission. The first signaling includes the interference levelindication information of the interference from the neighboring cell,and the second signaling includes the indication information of thefrequency resource that receives the interference from the neighboringcell.

Further, the first signaling further includes the indication informationof the subframe and/or the PRB that receive/receives the interferencefrom the neighboring cell; or the second signaling further includes theindication information of the subframe and/or the PRB thatreceive/receives the interference from the neighboring cell.

Preferably, in some other embodiments, the interference indicationinformation is carried in second signaling and OI signaling fortransmission, where the second signaling includes the indicationinformation of the frequency resource that receives the interferencefrom the neighboring cell, and the OI signaling includes interferencelevel indication information of the interference from the neighboringcell to the frequency resource indicated by the first interferenceindication signaling.

Further, the OI signaling further includes the indication information ofthe subframe and/or the PRB that receive/receives the interference fromthe neighboring cell; or the second signaling further includes theindication information of the subframe and/or the PRB thatreceive/receives the interference from the neighboring cell.

Preferably, in some other embodiments, the interference indicationinformation is carried in second signaling and HII signaling fortransmission, where the second signaling includes the indicationinformation of the frequency resource that receives the interferencefrom the neighboring cell, and the HII signaling includes indicationinformation of a PRB that probably causes interference to theneighboring cell and that is on the frequency resource indicated by thesecond signaling.

Further, the HII signaling further includes the indication informationof the subframe that receives the interference from the neighboringcell, and/or the interference level indication information; or thesecond signaling further includes the indication information of thesubframe and/or the PRB that receive/receives the interference from theneighboring cell.

Further, in some embodiments, the base station further receivesindication information of a time resource and/or a frequency resourcethat are/is configured to be in the flexible half-duplex mode, where theindication information is sent by the neighboring cell; and/or the basestation may send indication information of a time resource and/or afrequency resource that are/is configured to be in the flexiblehalf-duplex mode. Preferably, the indication information of the timeresource and/or the frequency resource that are/is configured to be inthe flexible half-duplex mode is sent by means of semi-persistentbroadcasting.

Based on the same technical conception, an embodiment of the presentdisclosure further provides a base station.

Referring to FIG. 3, FIG. 3 is a schematic structural diagram of a basestation according to an embodiment of the present disclosure.

As shown in the figure, the base station may include an interface 301, aprocessing unit 302, and a memory 303. The processing unit 302 isconfigured to control an operation of the base station. The memory 303may include a read-only memory and a random access memory and isconfigured to provide an instruction and data for the processing unit302. A part of the memory 303 may further include a non-volatile randomaccess memory (NVRAM). Components of the base station are coupledtogether using a bus system. In addition to a data bus, the bus system309 includes a power bus, a control bus, and a state signal bus.However, for clear description, various buses are marked as the bussystem 309 in the figure.

An interference indication procedure implemented by the base stationdisclosed in this embodiment of the present disclosure may be applied tothe processing unit 302 or be implemented by the processing unit 302.During implementation, steps in the interference indication procedureimplemented by the base station may be implemented using an integratedlogic circuit of hardware in the processing unit 302, or using aninstruction in a form of software. The processing unit 302 may be ageneral purpose processor, a digital signal processor, anapplication-specific integrated circuit, a field programmable gate arrayor another programmable logic device, a discrete gate or a transistorlogic device, or a discrete hardware component. The processing unit 302may implement or execute methods, steps, or logical schematic diagramsdisclosed in this embodiment of the present disclosure. The generalpurpose processor may be a microprocessor, any conventional processor,or the like. The steps of the methods disclosed with reference to thisembodiment of the present disclosure may be directly implemented by ahardware processor, or may be implemented by a combination of hardwareand a software module in a processor. The software module may be in arandom access memory, a flash memory, a read-only memory, a programmableread-only memory or an electrically erasable programmable memory, aregister, or another mature storage medium in the art. The storagemedium is located in the memory 303. The processing unit 302 readsinformation in the memory 303 and completes, with reference to hardwareof the processing unit 302, the steps of the interference indicationprocedure implemented by the base station.

Specifically, the processing unit 302 may be configured to execute theinterference indication procedure described in the foregoing embodiment.The procedure may include detecting interference from a neighboringcell; and sending interference indication information to the neighboringcell, where the interference indication information includes at leastindication information of a frequency resource that receives theinterference from the neighboring cell, the frequency resource is afrequency resource configured to be in a flexible half-duplex mode, andpreferably, the frequency resource includes one or a combination of afrequency band, a frequency subband, a partial frequency band, or apartial frequency subband.

Preferably, the interference indication information further includes onepiece of or a combination of the following information: indicationinformation of a subframe that receives the interference from theneighboring cell and that is on the frequency resource; indicationinformation of a PRB that receives the interference from the neighboringcell and that is on the frequency resource; or interference levelindication information of the interference from the neighboring cell.

The subframe that receives the interference from the neighboring celland that is on the frequency resource is a subframe that receivesreverse transmission interference from the neighboring cell and that ison the frequency resource; or the PRB that receives the interferencefrom the neighboring cell and that is on the frequency resource is a PRBthat receives reverse transmission interference from the neighboringcell and that is on the frequency resource.

Preferably, in some embodiments, the interference indication informationis carried in first signaling for transmission.

Preferably, in some other embodiments, the interference indicationinformation is carried in first signaling and second signaling fortransmission. The first signaling includes the interference levelindication information of the interference from the neighboring cell,and the second signaling includes the indication information of thefrequency resource that receives the interference from the neighboringcell.

Further, the first signaling further includes the indication informationof the subframe and/or the PRB that receive/receives the interferencefrom the neighboring cell; or the second signaling further includes theindication information of the subframe and/or the PRB thatreceive/receives the interference from the neighboring cell.

Preferably, in some other embodiments, the interference indicationinformation is carried in second signaling and OI signaling fortransmission, where the second signaling includes the indicationinformation of the frequency resource that receives the interferencefrom the neighboring cell, and the OI signaling includes interferencelevel indication information of the interference from the neighboringcell to the frequency resource indicated by the first interferenceindication signaling.

Further, the OI signaling further includes the indication information ofthe subframe and/or the PRB that receive/receives the interference fromthe neighboring cell; or the second signaling further includes theindication information of the subframe and/or the PRB thatreceive/receives the interference from the neighboring cell.

Preferably, in some other embodiments, the interference indicationinformation is carried in second signaling and HII signaling fortransmission, where the second signaling includes the indicationinformation of the frequency resource that receives the interferencefrom the neighboring cell, and the HII signaling includes indicationinformation of a PRB that probably causes interference to theneighboring cell and that is on the frequency resource indicated by thesecond signaling.

Further, the HII signaling further includes the indication informationof the subframe that receives the interference from the neighboringcell, and/or the interference level indication information; or thesecond signaling further includes the indication information of thesubframe and/or the PRB that receive/receives the interference from theneighboring cell.

Further, in some embodiments, the base station further receivesindication information of a time resource and/or a frequency resourcethat are/is configured to be in the flexible half-duplex mode, where theindication information is sent by the neighboring cell; and/or the basestation may send indication information of a time resource and/or afrequency resource that are/is configured to be in the flexiblehalf-duplex mode. Preferably, the indication information of the timeresource and/or the frequency resource that are/is configured to be inthe flexible half-duplex mode is sent by means of semi-persistentbroadcasting.

Persons skilled in the art should understand that the embodiments of thepresent disclosure may be provided as a method, a system, or a computerprogram product. Therefore, the present disclosure may use a form ofhardware only embodiments, software only embodiments, or embodimentswith a combination of software and hardware. Moreover, the presentdisclosure may use a form of a computer program product that isimplemented on one or more computer-usable storage media (including butnot limited to a disk memory, a compact disc read-only memory (CD-ROM),an optical memory, and the like) that include computer-usable programcode.

The present disclosure is described with reference to the flowchartsand/or block diagrams of the method, the device (system), and thecomputer program product according to the embodiments of the presentdisclosure. It should be understood that computer program instructionsmay be used to implement each process and/or each block in theflowcharts and/or the block diagrams and a combination of a processand/or a block in the flowcharts and/or the block diagrams. Thesecomputer program instructions may be provided for a general-purposecomputer, a dedicated computer, an embedded processor, or a processor ofany other programmable data processing device, so that the instructionsexecuted by the computer or the processor of any other programmable dataprocessing device may implement a specific function in one or moreprocesses in the flowcharts and/or in one or more blocks in the blockdiagrams.

These computer program instructions may be stored in a computer readablememory that can instruct the computer or any other programmable dataprocessing device to work in a specific manner, so that the instructionsstored in the computer readable memory generate an artifact thatincludes an instruction apparatus. The instruction apparatus implementsa specific function in one or more processes in the flowcharts and/or inone or more blocks in the block diagrams.

These computer program instructions may also be loaded onto a computeror another programmable data processing device, so that a series ofoperations and steps are performed on the computer or the anotherprogrammable device, thereby generating computer-implemented processing.Therefore, the instructions executed on the computer or the anotherprogrammable device provide steps for implementing a specific functionin one or more processes in the flowcharts and/or in one or more blocksin the block diagrams.

Although some preferred embodiments of the present disclosure have beendescribed, persons skilled in the art can make changes and modificationsto these embodiments once they learn of the basic inventive concept.Therefore, the following claims are intended to be construed as to coverthe preferred embodiments and all changes and modifications fallingwithin the scope of the present disclosure.

Obviously, persons skilled in the art can make various modifications andvariations to the present disclosure without departing from the spiritand scope of the present disclosure. The present disclosure is intendedto cover these modifications and variations provided that they fallwithin the scope of protection defined by the claims of the presentdisclosure and their equivalent technologies.

1. An interference indication method, comprising: detecting, by a basestation, interference from a neighboring cell; and sending, by the basestation, interference indication information to the neighboring cell,wherein the interference indication information comprises an indicationof a frequency resource that receives the interference, and wherein thefrequency resource is configured to be in a flexible half-duplex mode.2. The method according to claim 1, wherein the interference indicationinformation further comprises one or more of an indication of a subframethat receives the interference on the frequency resource, an indicationof a physical resource block (PRB) that receives the interference on thefrequency resource, or an interference level of the interference.
 3. Themethod of claim 2, wherein the interference indication informationfurther comprises, an indication that a subframe receives reversetransmission interference from the neighboring cell on the frequencyresource, or an indication that a PRB receives reverse transmissioninterference from the neighboring cell on the frequency resource.
 4. Themethod of claim 1, wherein the interference indication information iscarried in second signaling and overload indication (OI) signaling fortransmission, wherein the second signaling comprises the indicationinformation of the frequency resource that receives the interference,and wherein the OI signaling comprises interference level indicationinformation of the interference to the frequency resource indicated bythe interference indication information.
 5. The method of claim 4,wherein the OI signaling further comprises indication information of asubframe or a PRB that receives the interference, or wherein the secondsignaling further comprises indication information of a subframe or aPRB that receives the interference.
 6. The method of claim 1, whereinthe interference indication information is carried in second signalingand high interference indication (HII) signaling for transmission,wherein the second signaling comprises the indication information of thefrequency resource that receives the interference, and wherein the HIIsignaling comprises an indication of a PRB that probably causes theinterference on the frequency resource indicated by the secondsignaling.
 7. The method of claim 6, wherein the HII signaling furthercomprises an indication of a subframe that receives the interference,and/or interference level indication information, or wherein the secondsignaling further comprises an indication of a subframe or a PRB thatreceives the interference.
 8. The method of claim 1, further comprising:receiving, by the base station, an indication of a time resource or afrequency resource configured to be in the flexible half-duplex mode,wherein the indication is sent by the neighboring cell; or sending, bythe base station, an indication of a time resource or a frequencyresource configured to be in the flexible half-duplex mode.
 9. Themethod of claim 8, further comprising receiving the indication of thetime resource or the frequency resource by semi-persistent broadcasting.10. A base station, comprising: a processor, configured to detectinterference from a neighboring cell; and a transceiver, configured tosend interference indication information to the neighboring cell,wherein the interference indication information comprises an indicationof a frequency resource that receives the interference, and wherein thefrequency resource is configured to be in a flexible half-duplex mode.11. The base station of claim 10, wherein the interference indicationinformation further comprises one or more of an indication of a subframethat receives the interference on the frequency resource, an indicationof a physical resource block (PRB) that receives the interference on thefrequency resource, or an interference level of the interference. 12.The base station of claim 11, wherein the interference indicationinformation further comprises an indication that a subframe receivesreverse transmission interference from the neighboring cell on thefrequency resource, or an indication that a PRB receives reversetransmission interference from the neighboring cell on the frequencyresource.
 13. The base station of claim 10, wherein the interferenceindication information is carried in first signaling and secondsignaling for transmission, wherein the first signaling comprises theinterference level indication information of the interference, andwherein the second signaling comprises the indication information of thefrequency resource that receives the interference.
 14. The base stationof claim 13, wherein the first signaling further comprises indication ofa subframe or a physical resource block (PRB) that receives theinterference, or wherein the second signaling further comprises anindication of the subframe or a PRB that receives the interference. 15.The base station of claim 10, wherein the interference indicationinformation is carried in second signaling and overload indication (OI)signaling for transmission, wherein the second signaling comprises theindication information of the frequency resource that receives theinterference, and wherein the OI signaling comprises interference levelindication information of the interference to the frequency resourceindicated by the interference indication information.
 16. The basestation of claim 15, wherein the OI signaling further comprises anindication of a subframe or a PRB that receives the interference, or thesecond signaling further comprises an indication of a subframe or a PRBthat receives the interference.
 17. The base station of claim 10,wherein the interference indication information is carried in secondsignaling and high interference indication (HII) signaling fortransmission, wherein the second signaling comprises the indicationinformation of the frequency resource that receives the interference,and wherein the HII signaling comprises an indication of a PRB thatprobably causes the interference on the frequency resource indicated bythe second signaling.
 18. The base station of claim 17, wherein the HIIsignaling further comprises an indication of a subframe that receivesthe interference, and/or interference level, or the second signalingfurther comprises an indication of a subframe or a PRB that receives theinterference.
 19. The base station of claim 10, wherein the transceiveris further configured to receive indication information of a timeresource and/or a frequency resource configured to be in the flexiblehalf-duplex mode, wherein the indication information is sent by theneighboring cell, or send indication information of a time resourceand/or a frequency resource configured to be in the flexible half-duplexmode.
 20. The base station of claim 19, wherein the indicationinformation of the time resource and/or the frequency resource isconfigured to be in the flexible half-duplex mode is sent bysemi-persistent broadcasting.